File:Ina hrp219a.jpg

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DescriptionIna hrp219a.jpg	English: The unique lunar feature Ina (center), within Lacus Felicitatis, on the moon. The feature was often called the 'D-Caldera' prior to formal naming in 1979. This is Figure 232 of Apollo Over the Moon (NASA SP-362, 1978), which has the following caption: The steep-walled but shallow D-shaped depression near the center of the photograph is apparently a unique feature. It is located in a patch of mare on the foothills of the Montes Haemus, west of Mare Serenitatis. Measured along its straight side, the depression is about 3 km wide. It is situated atop a very gentle circular dome that appears to be somewhat smoother than the surrounding mare surface. As is more clearly shown in the accompanying stereogram (fig. 233), the many bulbous structures on the floor give it a blisterlike appearance. The depression is believed to be volcanic, probably a caldera (El-Baz, 1973b). Figure 234 explains the probable sequence of events leading to the formation of this unusual structure.-F.E.-B.
Date	original 1972, published 1978
Source	Transferred from en.wikipedia to Commons. (Original text: Apollo 17 Metric camera image AS17-M-1672, cropped to show Ina and surrounding terrain. Immediate source: NASA History Program Office, Apollo Over the Moon, A view from orbit (NASA SP-362, 1978) Figure 228 hrp219)
Author	NASA

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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Date/Time	Dimensions	User	Comment
2014-04-02 04:18	700×724× (104920 bytes)	Jstuby	{{Information \|Description = The unique lunar feature Ina (center), within [[Lacus Felicitatis]], on the moon. The feature was often called the 'D-Caldera' prior to [http://planetarynames.wr.usgs.gov/Feature/2680 formal naming in 1979]. This is Figur...

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:29, 12 September 2016		2,320 × 2,316 (1.3 MB)	Jstuby (talk \| contribs)	higher resolution http://wms.lroc.asu.edu/apollo/view?camera=M&image_name=AS17-M-1672
	01:58, 16 March 2016		700 × 724 (102 KB)	FastilyClone (talk \| contribs)	Transferred from enwp

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- Lacus Felicitatis
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- Lacus Felicitatis
- User:Jstuby/Apollo
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- Lacus Felicitatis
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- 幸福湖

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JPEG file comment	This is a virtual print of Apollo Photograph AS17-M-1672 generated by the School of Earth and Space Exploration, Arizona State University. Usage of this image is governed by the Acceptable Use Policy, which can be accessed at http://apollo.sese.asu.edu/ABOUT_SCANS/index.html

File:Ina hrp219a.jpg

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